public static UpdateStatement CreateUpdateStatement(IMapping mapping)
{
UpdateStatement statement = new UpdateStatement(mapping.TableName);
foreach (var item in mapping.Columns)
{
var pinfo = (PropertyInfo)item.Property;
SqlParameter prm;
if (!item.IsDbGenerated && !item.IsPrimaryKey)
{
if (pinfo.PropertyType.IsGenericType && pinfo.PropertyType.GetGenericTypeDefinition() == typeof(Nullable <>))
{
prm = statement.CreateParameter(item.Name, pinfo.PropertyType.GetGenericArguments()[0]);
}
else
{
prm = statement.CreateParameter(item.Name, pinfo.PropertyType);
}
statement.Column(item.ColumnName, prm);
}
else
{
prm = statement.CreateParameter(item.Name, pinfo.PropertyType);
statement.Where(new Condition(item.ColumnName, Comparisons.Equals, prm));
}
}
return(statement);
}
protected int UpdateRows(string table_name)
{
DataTable myTable = this.Tables[table_name];
DataRowCollection rows = myTable.Rows;
int rowsCount = rows.Count;
int rowsAffected = 0;
if (rowsCount > 0)
{
var cmd = new UpdateStatement(myTable.ExtendedProperties["Storage"].ToString());
cmd.ConnectionStringName = _connectionStringName;
var prmlist = new List <SqlParameter>();
int colsCount = myTable.Columns.Count;
string identcol = String.Empty;
for (int c = 0; c < colsCount; c++)
{
DataColumn col = myTable.Columns[c];
SqlParameter prm = new SqlParameter(col.ColumnName, col.DataType);
prmlist.Add(prm);
if (col.ExtendedProperties["PrimaryKey"] != null)
{
cmd.Where(Condition.IsEqual(col.ExtendedProperties["Storage"].ToString(), prm));
}
else if (col.ExtendedProperties["NonStorable"] == null)
{
cmd.Column(col.ExtendedProperties["Storage"].ToString(), prm);
}
}
IEnumerator rowEnum = rows.GetEnumerator();
while (rowEnum.MoveNext())
{
DataRow row = (DataRow)rowEnum.Current;
if (row.RowState == DataRowState.Modified)
{
for (int c = 0; c < colsCount; c++)
{
SqlParameter prm = prmlist[c];
prm.Value = row[prm.Name];
}
cmd.Execute();
row.AcceptChanges();
rowsAffected++;
}
}
}
return(rowsAffected);
}
public virtual void Remove(ICondition filter)
{
if (filter == null)
{
return;
}
var update = new UpdateStatement(_tableName)
{
ConnectionStringName = _connectionStringName
};
var item = _metadata.Columns.First(x => x.Name == Entity.IS_REMOVED);
if (item != null)
{
update.Column(item.ColumnName, SqlBoolean.TRUE);
update.Where(filter);
update.Execute();
}
}
